Invisible and semi-invisible decays of bottom baryons

• Published in: Chinese physics C Vol. 48; no. 8; p. 83109
• Main Authors: Zheng 郑, Yong 勇, Ding 丁, Jian-Nan 剑南, Li 李, Dong-Hao 东浩, Li 李, Lei-Yi 磊毅, Lü 吕, Cai-Dian 才典, Yu 于, Fu-Sheng 福升
• Format: Journal Article
• Language: English
• Published: 01.08.2024
• ISSN: 1674-1137; 2058-6132
• DOI: 10.1088/1674-1137/ad4afa

The similar densities of dark matter and baryons in the universe imply that they may arise from the same ultraviolet model. B -Mesogenesis, which assumes dark matter is charged under the baryon number, attempts to simultaneously explain the origin of baryon asymmetry and dark matter in the universe. In particular, B -Mesogenesis may induce bottom-baryon decays into invisible or semi-invisible final states, which provide a distinctive signal for probing this scenario. In this work, we systematically study the invisible decays of bottom baryons into dark matter and the semi-invisible decays of bottom baryons into a meson or a photon together with a dark matter particle. In particular, the fully invisible decay can reveal the stable particles in B -Mesogenesis. Some QCD-based frameworks are used to calculate the hadronic matrix elements under the B -Mesogenesis model. We estimate the constraints on the Wilson coefficients or the product of some new physics couplings with the Wilson coefficients according to the semi-invisible and invisible decays of bottom baryons detectable at future colliders.